Stone-sawing machine



(No Model.) 2 Sheets-Sheet 1. J. H. FRENIER.

STONE SAWING MACHINE. No. 432,183. Patented July 15, 1890.

gNo Model.) 2 Sheets-Sheet J. H. PRENIER.

STONE SAWING MACHINE.

Inventor 4 v Km/8m M an;

UNITED STATES PATENT OEEicE.

JOHN HENRY FRENIER, OF RUTLAND, VERMONT.

STONE-SAWING MACHINE.

I SPECIFICATION forming part Of Letters Patent 432,183, dated July 15, 1890.

Application filed December 2, 1885. Serial No. 184,452. (No model.)

To all whom it may concern:

Be .it known that I, JOHN HENRY FRENIER, of Rutland, county of Rutland, and State of Vermont, have in vented new and useful Improvements in Stone-Sawing Machines; and I do hereby declare that the following is a full and exact description of the same, reference being had to the accompanyingdrawings, and to the letters of reference marked thereon.

This invention relates to that class of stone-sawing machines which has for its distingnishin g characteristic the combination of the following elements: a reciprocating sawframe actuated by a crank and pitman, vertically-adjustable cross -heads moving in curved guides upon the frame, and pivoted suspension-rods uniting the cross-heads to the frame, the construction being such that the cross-head suspension-bearings of the sawframe are adjusted longitudinally relative to a normal vertical line in harmony or coincidence with the longitudinal adjustment or movement of the saw-frame itself as the latter changes its vertical position relatively to the crank and pitman; and it consists, broadly, in the combination of the following elements: a reciprocating saw-frame actuated by crank and pitman, curved guides upon the frame, vertically adjustable cross-heads, and independent blocks carrying the suspension points or bearings of the saw-frame, which blocks are adapted to move longitudinally in the cross-heads and follow the curved line of the guides, while the crossheads themselves move in a direct vertical plane.

The invention consists, further, in an improved form of feeding mechanism, as will be fully described hereinafter.

In the drawings, Figure 1 is a side elevation of my improved machine, the front posts of the frame being partially broken away to show the parts behind them. Fig. 2 is a cross-section of the feed-lever-holding device; Fig. 3, an end view of the machine shown in Fig. 1; Fig. 4, a side elevation of a modified form of construction; Fig. 5, a transverse sectional view of one of the posts with a cross-head in position thereon, and Fig. 6 a detail View of the cross-shaft and lever shown in Fig. 4.

For convenience and clearness the description of the machine will be given under two heads, as follows: First, ihe mechanism for causing the coincident longitudinal movement of the suspension-bearings of the sawframe and the saw-frame itself when the vertical position of the parts is changed; second, the mechanism for feeding the saw-f rame and saws to the stone.

First. The mechanism for causing the coincident longitudinal movement of the suspension-bearings of the saw-frame and the sawframe itself when the eertical position of the parts is ehange(l.-A A, Figs. 1 and 2, repre sent vertical posts, B the foundation plate or bed, and O 0 upper beams constituting a frame-work of proper solidity and strength. D D, Figs. 1, 3. and 5, represent straight guides upon the posts, and E E cross-heads, of any proper construction, adapted to move upon the guides in a vertical direction. F F repre sent feeding-screw shafts extending through the nut-bearings of the cross-heads in the manner well understood. G G represent guideplates of the proper curved construction ,which are rigidly fixed upon the frame, as shown. The curvature of said guides should coincide to the are or path described by the end of the pitman, which is attached to the saw-frame when said frame is moved vertically. H H representindependentblocks of proper form, which are so held in the cross-heads as to be capable of sliding freely therein in a longitudinal direction, as shown in Figs. 1, 3, and 5. The said cross-heads E E are provided at each of their ends with a suitable supporting-way h, Figs. 1 and 3, for supporting the sliding blocks H H, and with suitable gibs h and set-screws h, Figs. 1 and 3, for taking up the Wear and to keep the block in close sliding contact with its supporting-ways. B represents the saw-frame, and h h pivoted suspension-rods uniting the independent sliding blocks to the saw-frame. h is a bracket-step for supporting and holding the lower end of the screw-shaft F. h represents a friction roller or equivalent device by means of which the inner end of the block H is connected to the curved guide-plate in such manner as to be held thereby without interference with its capacity to move freely thereon when the cross-heads are adjusted in a vertical direction. h h represent transverse bars or shafts forming the suspension-bearings of'the sawframe SllSPGIlSlOl'l-l'OClS h h, said shafts being held and supported by the sliding blocks H H.

The operation of these parts is substantially as follows: When the feeding-screw shafts are revolved in the manner well understood, the cross-heads are caused to move up and down in direct vertical planes, and the suspension-bearings of the saw-frame are given the proper longitudinal adjustment to coincide with the longitudinal movement of the saw-frame itself by means of the independent blocks H H, which by sliding longitudinally in the cross-heads are adapted to follow the curved lines of the guide-plates G G.

A modified form of construction for communicating longitudinal movement to the blocks H H from the curved guides G G is shown in Fig. 4.

I, Fig. 5, represents a bracket-bearing extending from the cross-head for supporting a transverse shaft 1', Figs. 5 and 6, which is provided with a lever t", Fig. 6, at one of its ends and a lever 2' at its other end, as shown. The said lever c" is provided at its free end with a friction-roller or other proper device adapted to engage with the curved guide and to move freely thereon when the cross-heads are moving vertically. i represents the sliding block H of Figs. 1, 3, and 5. Connection between the blocks and their actuating-lever is made by means of a pin and slot; but, if

desired, any other suitable means may be employed to connect them together. The general operation of this construction is similar to that previously described, the guide in this case, however, being more curved than before.

If desired, the shaft carrying the levers ia' may be set above the cross-head instead of below, the curve, however, in this case being reversed. By uniting the blocks on each side of the machine by a rigid connecting-rod, as shownbydotted linein Fig. -l,thecurved guideplates G at one end may be dispensed with, and by connecting one of the levers of each end of the machine by a rigid rod, as shown in dotted line in Fig. 5, only one curved guide is required.

I do not confine myself to the precise means described for imparting a longitudinal movement to the adjustable sliding blocks H H. Other means may be adapted for the same purpose, it being only essential that the said adjustable blocks should be moved longitudinally in harmony or coincidence with the longitudinal movement of the saw-frame itself as the latter changes its vertical position relatively to the crank and pitman, or, in other words, that the said block should be moved longitudinally, so as to correspond to the curved path described by the end of the pitman attached to the saw-frame, as shown by dotted line in Fig. 1, when the saw-frame is moved above or below the level of the crankshaft. Neither do I confine myself entirely to the employment of this system of screws for operating the cross-heads vertically, as other means may be employed for the same purpose. By means of the construction described great simplicity is obtained. This special construction also is well adapted -to be applied to existing machines.

Second. The mechanism for feeding the saw-frame and the saws to the st0ne.The screw-shafts are provided at their upperends with the well-known system of bevel-gearing, said system of gearing being such that the screws F F are turned simultaneously. To this gearing is connected the gear h',to which the feeding motion is imparted. K represents a frame plate pivoted at one end of the main frame, and supports a pinion h, adapted to engage with the actuating-gear k in the manner well understood, and fast to said pinion h is a ratchet-wheel J, which is actuated by means of apawl to give intermittent movement to the feeding-screw shafts F F. j represents a lever-arm pivoted upon the axis of the said ratchet-wheel, and is provided with a curved shield or plate j, secured to the lever 7' at.

a point between the pawl and the ratchetwheel, as shown. j is a holding-plate having any proper notch adapted, in connection with a pin or stop 9' or other proper device on the lever j, to hold the free end of said lever and the shield j in any desired position, the said holding-plate j having proper figures on its face to indicate the amount of the feed. L represents a movable frame carrying at one of its ends the well-known system of reversing-gear composed of four pinions s s s 8 said movable frame being supported in any proper manner and pivoted so as to throw either the upper or lower pinion of the reversing-gear into engagement with the gear is, as is well understood. The movable frame L is operated and held into position by means of a lever 76*, attached to its free end, and said lever is provided at its lower end with a pin or stop 70, adapted to work in connection with the holding-platef, which is provided with a longitudinal and vertical slot or way, and also holes 10 10 10 three of these holes being at the extremity of the slots, and the other near or at the center. of the vertical slot, as shown in Figs. 1 and 2. These slots are for guiding the pin or stop kin the holding-plate. 10 represents an elbow-lever supported in any suitable manner and having one of its ends connected with the free end of the frameplate K and the other end to the lever 10 by means of the rod W, as shown. By moving the lever 70 so that its stop-pin enters the holes k or k the ratchet-pinion 7c is either thrown out or in engagement with the gear is, while the pinion of the reversing-gear mechanism is kept out of engagement with the said gear 70', and by moving the pin into either of the holes 70 or 70 either the upper or lower pinion of the reversing-gear mechanism is thrown in or out of engagement with the gear 70, while the ratchet-pinion is kept out IIO 432,1se a of gear. By moving the free end of the lever j the shield-plate j is caused to cover or 1111- cover a greater or less number of the teeth of the ratchet-Wheel, and thus permit the pawl to act upon a greater or less number of the same, and by means of the adjustable stop 7' the lever j is held securely in place.

Myimprovement in the feeding mechanism consists, first, of the adjustable stop 7' on the lever j in connection with the notches for holding the said lever and shield-plate or its equivalent securely in place; second, it consists in connecting together the reversinggear mechanism and the supporting-frame L with the ratchet-supporting frame it, so that both are operated or adjusted by the same lever, which is done by the elboW-leverk and rod k Heretofore these two frames have been made independent of each other and have always caused more or less trouble, as it is evident that if the pinion k of the ratchet- Wheel is engaged With the gear and either one of the pinions of the reversing-gear mechanism is thrown into engagement with the same gear 70, the breaking of some parts must ensue, causing much delay and expense.

By means of myimprovement the possibility of moving one partinto engagement when another part is already engaged is absolutely prevented and a great saving is effected. I do not, however, confine myself to the only means described for operating the pinionsupporting frame K from the shifting-lever 7.3, as the said elbow-lever may be made of any different form and set and supported in other Ways for effecting the same purpose, as also other systems of devices may produce the same result. Neither do I confine myself to the only means shown foradjusting and holding the shifting-lever 70 as many other Wellknown holding devices may be employed.

Having thus fully described my invent-ion, What I claim as new, and desire to secure by Letters Patent, is

1. The combination, broadly, of the followin g elements: a main frame of vertical straight guides fast to said main frame, of verticallyadjustable crossheads adapted to move upon said guides, of longitudinally-adj ustable blocks or frames supported by and moving in said cross-heads, of suspension-rods held and supported by said blocks or frames, a reciprocating saw-frame supported by said rods, and curved guides upon the main frame, substantially as described, adapted to the vertical movement of the adjustable blocks or frames and imparting to said blocks a longitudinal movement coincident with the movement of the saw-frame, as explained and described.

2. The combination, with the main frame,

of vertical straight guides fast to said frame, of vertically-adjustable cross-heads adapted to move upon said guides, of l0ng1tud1nallyadjustable blocks or frames supported by sa d cross-heads, curved guides upon the main frame adapted to impart a longitudinal movement to said blocks or frames, substantially as described, a reciprocating saw-frame supported from said longitudinally movable blocks or frames, and a system of vertical screw-shafts supporting and operating upon the saW-frame-supporting mechanism, substantially as described. 3. In a feed mechanism for stone-sawing machines, the combination, with the ratchet feed mechanism and the reversing feed-supporting mechanism, of means, substantially as described, for connecting and operating both mechanisms, substantially as described, and for the purpose set forth.

4. In a stone-sawing machine, the comb nation,with the main frame, of vertical straight guides fast to said main frame, of verticallyadjustable cross-heads adapted to move upon said guides, of longitudinally ad ustable blocks supported by said cross-heads, and a reciprocating saw-frame supported from said blocks, substantially as described.

5. In a stone-sawing machine, the combination of a reciprocating saw-frame, of suspension-rods, of lon gitudinallyadj ustable blocks,

of vertically adjustable cross heads, and curved guides upon the main frame impa rting to the said blocks a longitudinal move ment, substantially as and for the purpose set forth.

6. In combination with a pivoted frame K, supporting the intermittent feed mechanism, a pivoted frame Ii, supporting the reversing continuous feed mechanism, a shifting-lever 70 connected to the latter mechanism, and mechanism, substantially as described, connecting the frame K and the lever is, substantially as and for the purpose set forth.

7. In a feed mechanism, a shifting-lever 10 common to both the intermittent and the reversing continuous feed mechanism, and a holding-plate having slots for guiding and holes or stops for holding the said shiftinglever in position, substantially as described, and for the purpose set forth.

This specification signed and witnessed this 17th day of November, 1885.

JOHN HENRY FRENIER.

Witnesses:

FRANK W. GARY, HOMER L. Hooe. 

